cooling ACURA NSX 2022 User Guide

397
uuMaintenance Under the Hood and Hatch uCooling System
Maintenance
1. Make sure the engine and radiator are
cool.
2. Turn the reserve tank cap 1/8 turn counter-
clockwise and relieve any pressure in the
cooling system.
3. Push down and turn the reserve tank cap
counter-clockwise to remove it.
4. Pour coolant into the reserve tank until it
reaches the MAX mark.
5. Put the reserve tank cap back on, and
tighten it fully.
■Adding the Coolant1Adding the Coolant
NOTICE
Pour the fluid slowly and ca refully so you do not spill
any. Clean up any spills immediately; they can
damage components in the engine compartment.
Reserve Tank
Cap
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398
uuMaintenance Under the Hood and Hatch uInverter Coolant
Maintenance
Inverter Coolant
This coolant is premixed with 50% antifreeze and 50% water. Do not add any
straight antifreeze or water.
We recommend you check the inverter co olant level every time you refuel.
Have an authorized Acura NSX deal er replace the inverter coolant.
1. Open the hood.
2 Opening the Hood P. 388
2.Check the fluid level in the tank.
3. If the coolant level has dropped below the
MIN level, have your vehicle serviced at an
authorized Acura NSX dealer.
u Only a properly trained technician can
refill the coolant an d check the system
for leaks.
Specified coolan t: Acura Long Life Antifreeze/Coolant Type 2
■Checking the Coolant
1Inverter Coolant
NOTICE
Genuine Acura engine cool ant is a 50/50 mixture of
antifreeze and water that can withstand freezing at
temperatures as low as a bout -31°F (-35°C). If your
vehicle is consistently subjected to temperatures
below this, the concentration of antifreeze in the
coolant should be increased. Consult an authorized
Acura NSX dealer for details.
If Acura antifreeze/coolant is not available, you may
use another major brand non- silicate coolant as a
temporary replacement. Check that it is a high quality
coolant recommended fo r aluminum engines.
Continued use of any non-Ac ura coolant can result in
corrosion, causing the cooling system to malfunction
or fail. Have the cooling system flushed and refilled
with Acura antifreeze/cool ant as soon as possible.
Do not add rust inhibitors or other additives to your
vehicle’s cooling system. Th ey may not be compatible
with the coolant or with the motor components.
MAX
MIN
Filler
Tank
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419
Maintenance
Climate Control System Maintenance
Air Conditioning
To ensure proper and safe operation, the Society of Automotive Engineers (SAE
J2845) recommends that the refrigerant system only be serviced by trained and
certified technicians.
Never repair or replace the air conditio ning evaporator (cooling coil) with one
removed from a used or salvaged vehicle.
New replacement mobile air conditioning evaporators must be certified (and
labeled) as meeting SAE Standard J2842.
Dust and Pollen Filters
The climate control system is equipped wi th dust and pollen filters that collect
pollen, dust, and other debris in the air. The Maintenance MinderTM messages will let
you know when to replace the filters.
We recommend that you replace the dust an d pollen filters sooner when using your
vehicle in areas with high concentrations of dust.
1 Air Conditioning
NOTICE
Vented refrigerant is harmful to the environmentM
To avoid refrigerant from venting, never replace the
evaporator with one re moved from a used or
salvaged vehicleM
Refrigerant in your vehicle

430
Maintenance
Storage
Vehicle Storage
If you need to park your vehicle for an extended period (more than one month),
there are several things you should do to prepare it for storage. This helps reduce
possible deterioration of vehicle components and overall condition, which allows
you to get the vehicle back on the road with minimal delay. These are:
• If possible, store your NSX in a garage or enclosed area.
• Fill the fuel tank completely.
• Change the engine oil and filter.
• Wash and dry the exterior completely.
• Clean the interior. Make sure the carpeti ng, floor mats, etc., are completely dry.
• Put the transmission in
(P.
Release the parking brake.
• Leave one window open slightly (if th e vehicle is being stored indoors).
• To maintain the low-voltage 12-volt battery, connect it to an accessory battery
charger. For more information on how to maintain your 12-volt battery, consult
an authorized Acura NSX dealer.
2 Checking the 12-Volt Battery P. 417
•If the vehicle is to be stored for a longer period of time, it should be supported on
jack stands to raise the tires off th e ground to prevent tire flat spotting.
2Handling of the Jack P. 446
•Support the front wiper blade arms with a folded towel or rag so they do not
touch the windshield.
• Cover the vehicle with a “breathable” co ver, one made from a porous material
such as cotton. Nonporous materials (suc h as plastic sheeting) may trap moisture,
which can damage the paint.
• If possible, remove the vehicle from th e garage or enclosed area, remove
covering, and periodically run the engi ne until it reaches full operating
temperature (the cooling fa n cycles on and off twice).
Preferably, do this once a month.
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453
uuOverheating uHow to Handle Overheating
Handling the Unexpected
■Next thing to do
1.Check that the cooling fan is operating and
turn the power system off once the
temperature gauge pointer goes down.
u If the cooling fan is not operating,
immediately turn the power system off.
2. Once the engine has cooled down, inspect
the coolant level and check the cooling
system components for leaks.
2 Checking the Coolant P. 396
uIf the coolant level in the reserve tank is
low, or no coolant in the tank, check that
the radiator is cool. Cover the reserve
tank cap with a heavy cloth and open the
cap. Add coolant until it reaches the
MAX mark, and put the cap back on.
■Last thing to do
Once the engine has cooled sufficiently, turn the power system on and check the
temperature gauge. If the temperature gauge pointer has gone down, resume
driving. If it has not gone down, contact an authorized Acura NSX dealer for repairs.
1How to Handle Overheating
If the coolant is leaking, contact an authorized Acura
NSX dealer for repairs.
Use water as an emergency/temporary measure only.
Have an authorized Acura NSX dealer flush the
system with proper antifree ze as soon as possible.
3WARNING
Removing the reserve tank cap while the
engine is hot can cause the coolant to spray
out, seriously scalding you.
Always let the engine and radiator cool
down before removing the reserve tank
cap.
Engine Coolant
Reserve Tank
MAX
MIN
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460
Handling the Unexpected
Fuses
Fuse Locations
If any electrical devices are not working, set
the power mode to VEHICLE OFF, and check
to see if any applicable fuse is blown.
There are two fuse boxes under the hood.
Fuse locations are shown on the fuse box
cover. Locate the fuse in question by the
fuse number and box cover number.
■Fuse box A
Located near the radiator. Push the tabs to
open the box.
■Hood Fuse Box
Tab
■Circuit protected and fuse rating
Circuit ProtectedAmps
1
EPS70 A
Cooling Fan50 A
ABS/VSA Motor40 A
ABS/VSA FSR20 A
AS F/B Main30 A
Main Fuse200 A
2
−(50 A)
F/B Main 1 60 A −(60A)
−(50A)
Left Electric Parking Brake Motor 30 A
Right Electric Parking Brake Motor 30 A
−(40A)
Heater Motor 2 30 A
Heater Motor 1 30 A −(40A)
3
E-OP30 A
−(30 A)
ADS30 A
AMP(30 A)
4 Parking Light 10 A
5IGPS PCS7.5 A
6 Left Headlight High Beam 10 A
7VFP27.5 A
8 Left Headlight Low Beam 10 A
9Right Headlight High Beam10 A
10 Right Headlight Low Beam 10 A
11IGPS Fan7.5 A
12 FI Main 15 A
13FI Sub20 A
14 Back Up 7.5 A
15SBW ECU7.5 A
16 DBW1 15 A
17IG Coil15 A
18 DBW2 15 A
19Parking Light & Headlight Main20 A
20 Rear Defroster 20 A
21Front Washer20 A
22 ISC 15 A
23−−
24 ACC/IG2 Main 10 A
25Daytime Running Lights10 A
26 Horn 10 A
27Interior Lights7.5 A
28 IGP2 15 A
29Audio10 A
Circuit ProtectedAmps
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486
Index
Lights On ................................................... 85
Low Fuel .................................................... 81
Low Oil Pressure ........................................ 74
Low Tire Pressure/TPMS ..... 84, 350, 352, 457
Malfunction Indicator Lamp ............... 79, 454
POWER SYSTEM ........................................ 78
READY....................................................... 78
Seat Belt Reminder .............................. 39, 81
Security System Alarm ............................... 86
Supplemental Restraint System ............ 57, 82
System Message ........................................ 84
Transmission System .................................. 80
Turn Signal ................................................ 85
Vehicle Stability Assist
TM (VSA®)
System ............................................. 83, 344
VSA ® OFF .......................................... 83, 345
Information ............................................... 469
Instant Fuel Economy ............................... 105
Instrument Panel ........................................ 73
Integrated Dynamics System .................... 334
QUIET Mode ............................................ 337
SPORT Mode ........................................... 337
SPORT+ Mode ......................................... 338
TRACK Mode........................................... 338
Interior Lights ........................................... 150
Interior Rearview Mirror .......................... 144
Inverter Coolant ................................ 398, 471
K
Key Number Tag ....................................... 110 Keyless Access System
.............................. 111
Keyless Lockout Prevention ..................... 117
Keys ........................................................... 109
Lockout Prevention.................................. 117
Number Tag ............................................ 110
Remote Transmitter ................................. 115
Kickdown (Dual Clutch Transmission) ..... 323
L
Launch Control......................................... 339
Lights ................................................. 134, 401
Automatic Operation (automatic lighting
control) ................................................. 135
Bulb Replacement ................................... 401
Daytime Running Lights........................... 137
High Beam Indicator .................................. 85
Interior .................................................... 150
Light Switches ......................................... 134
Lights On Indicator .................................... 85
Turn Signals ............................................ 133
Load Limits ................................................ 311
Locking/Unlocking .................................... 109
Auto Door Locking/Unlocking.................. 121
From Inside ............................................. 118
From Outside .......................................... 111
Keys ........................................................ 109
Using a Key ............................................. 117
Lockout Prevention System ..................... 117
Low Battery Charge (12-Volt) .................. 454
Low Fuel Indicator ...................................... 81 Low Keyless Access Remote Signal
Strength .................................................. 110
Low Oil Level ............................................ 459
Low Oil Pressure Indicator ......................... 74
Luggage (Maximum Load Limit) ............. 311
Lumbar Support ....................................... 147
M
Maintenance............................................ 375
12-Volt Battery ....................................... 417
Brake Fluid .............................................. 400
Cleaning ................................................. 420
Climate Control System .......................... 419
Coolant .......................................... 396, 398
Cooling System ....................................... 396
Inverter Coolant ...................................... 398
Maintenance Minder
TM............................ 379
Oil .......................................................... 391
Precautions ............................................. 376
Remote Transmitter ................................ 418
Replacing Light Bulbs .............................. 401
Safety ..................................................... 377
Service Items ........................................... 382
Tires........................................................ 407
Transmission Fluids ................................. 399
Under the Hood and Hatch ..................... 385
Malfunction Indicator Lamp ............. 79, 454
Map Lights ................................................ 151
Maximum Load Limit ............................... 311
Meters, Gauges .......................................... 99
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